PITTSBURGH (NewsRadio 1020 KDKA) — The United States Supreme Court refused to issue a stay of execution Wednesday night for death row inmate Troy Davis, who was convicted of murdering a police officer in Georgia based primarily on eyewitness testimony.

Of the nine eyewitnesses who identified Davis as the killer, all but two have since reversed their testimony. The lack of forensic evidence caused a nationwide outcry, with protests arising everywhere from social justice groups to social networking sites.

NewsRadio 1020 KDKA’s Robert Mangino talks with Brandon Garrett, author of Convicting the Innocent and professor of law at the University of Virginia, about the Davis case and how it is emblematic of many other death penalty cases in the United States.

Listen to Robert Mangino every weekday from 6 p.m. to 10 p.m. on NewsRadio 1020 KDKA!